David's Astronomy Pages CCD Images - Session 599 (2017-01-17)

Images (S598)

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Images (S600)

Objects	Session Notes
Abell 10 - Planetary Nebula (PLN 197-14.1) Baade 1 - Planetary Nebula (PK 171-25.1) M67 - Open Cluster     Photometric Monitoring - Variables   None     Astrometric Monitoring - Nearby Stars   None	- Evening session (4 hrs duration). Clear skies. Wind 0-5 mph.  - Session operated partly in observatory / partly from indoors - Main aims was to continue the process of bringing LX200 scope back into service. - Ambient Temperature:  2 degC (minimum) - CCD operation -25  (at 71% average cooling).      - Notes from 2017-01-17 >> includes details on Periodic Error Measurement & Correction

Abell 10 - Planetary Nebula (PLN 197-14.1)

Abell 10 / PLN 197-14.1 (Orion) Deep Sky Challenge object in the Jan 2017 edition of 'Astronomy Now' magazine

CCD Image (100% size, cropped) 6 x 30s exposure (average combine), 3x3 binning, C Filter 2017-01-18 01:38h UT (#599019-40) 12" LX200R  (at f/10.4) + ST-10XME

Abell 10 - earlier image (2016-12-27)

CCD Image (100% size, cropped) 4 x 30s exposure (average combine), 3x3 binning, C Filter 2016-12-27 22:57h UT (#598220-39) 12" LX200R  (at f/10.4) + ST-10XME

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Baade 1 - Planetary Nebula (PK 171-25.1) - viewing attempt

Baade 1 / PLN 171-25.1 / PLN 171-25.1 (Taurus) Deep sky challenge object in the Dec 2017 edition of Astronomy Now magazine Catalog Position for PLN 171-25.1 is shown by white circle. No sign of the Pl. Neb can be seen

CCD Image (50% size) 4 x 30s exposure (average combine), 3x3 binning, C Filter 2017-01-18 01:50h UT (#599043-51) 12" LX200R  (at f/10.4) + ST-10XME

Baade 1 / PLN 171-25.1 / PLN 171-25.1 - Higher Contrast (Again no sign of Nebula,  An old Flat Field was used for reduction and some dust motes remain uncorrected)

CCD Image (50% size) Image details as above

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M67 - Open Cluster

M67 (Taurus)

M67 - Total Exposure 10s (1 x 10s)

CCD Image (70% size) 10s exposure (single frame), 3x3 binning, C Filter 2017-01-18 02:16h UT (#599053) 12" LX200R  (at f/10.4) + ST-10XME

M67 - Total Exposure 90s (3 x 30s)

CCD Image (70% size) 3 x 30s exposure (average combine), 3x3 binning, C Filter 2017-01-18 02:21h UT (#599061-64) 12" LX200R  (at f/10.4) + ST-10XME

M67 - Total Exposure 164s (82 x 2s) Best 82 frames from 200 Stacked and Displayed in CCDSoft (Frames selected using CCD Inspector & Stacked in CCDSoft. DeepSkyStacker unable to recognise sufficient stars for alignment prior to stacking) Stars are sharper in this 'Lucky Seeing' image than in the 90s (3x30s) traditional CCD image above, but is much more affected by poor flat fielding and/or affected by dew build-up on the front corrector lens.

CCD Image (70% size) 82 x 2s exposure (average combine), 3x3 binning, C Filter 2017-01-18 02:21h UT (#599066-264) 12" LX200R  (at f/10.4) + ST-10XME

M67 - Total Exposure 164s (82 x 2s) Best 82 frames from 200 Stacked and Displayed in DeepSkyStacker Frames aligned using CCDSoft and then stacked (without alignment) in DeepSkyStacker (DeepSkyStacker unable to recognise sufficient stars for alignment prior to stacking

CCD Image (70% size) Image details as above

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Variable Stars

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